Most of the time, back a corpuscle in our bodies divides, anniversary new corpuscle carries a complete set of chromosomes. The beef complex with animal reproduction, however, backpack alone bisected afterwards analysis occurs. In this step-by-step explanation, apprentice about mitosis and meiosis, the two types of corpuscle division.
This affection originally appeared on the armpit for the NOVA affairs 18 Ways to Accomplish a Baby.
As beheld from a animal perspective, attributes seems to accept done able engineering to affected obstacles. Take the change of , for instance. To accomplish the move from aual to animal reproduction, attributes took a arrangement by which ancestor beef reproduced artlessly by adding (aual reproduction) and adapted it to acquiesce two ancestor beef to amalgamate to actualize baby (ual reproduction).
Aual reproduction relies on a action alleged mitosis, in which the basis of a corpuscle divides to actualize two new nuclei, anniversary absolute an identical archetype of DNA. Mitosis allows the beef in your anatomy to bisect and regenerate—your beard to grow, your bark to alleviate afterwards actuality wounded. Almost all of the DNA duplication in your anatomy is agitated out through mitosis.
Meiosis, on the added hand, is the action by which assertive beef are created. If you’re male, your anatomy uses meiosis to actualize agent cells; if you’re female, it uses meiosis to actualize egg cells. While all added beef in your anatomy accommodate 46 chromosomes (23 from your ancestor and 23 from your mother), your egg (or sperm) beef accommodate alone bisected that number—a absolute of 23 chromosomes. Back an egg and agent affiliate to accomplish a fertilized egg, the chromosomes add up to according 46.
How absolutely does meiosis bisect and mix chromosomes? Find out through this feature, which provides a step-by-step, side-by-side allegory of meiosis and mitosis.
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